Conveners
AIP: Theoretical and Mathematical: TMP 1
- Margaret Reid (Swinburne University of Technology)
AIP: Theoretical and Mathematical: TMP 2
- Murray Batchelor (Australian National University)
AIP: Theoretical and Mathematical: TMP 3
- XiaJi LIU
AIP: Theoretical and Mathematical: TMP 4
- Archil Kobakhidze
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Prof. Peter Drummond (Swiburne University of technology)12/12/2022, 11:00AIP: Theoretical and MathematicalInvited talk
We present a numerical model of an early universe analog using a Bose-Einstein condensate, including temperature effects and topological properties. This may provide an insight into the particle-antiparticle asymmetry seen in our universe.
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Sebastian Murk (Macquarie University and Sydney Quantum Academy)12/12/2022, 11:30AIP: Relativity and GravitationTalk (preferred)
Information loss in black hole evolution is one of the longest-running controversies in theoretical physics. However, the discordant properties of different generalisations of surface gravity reveal that the problem cannot be formulated self-consistently in semiclassical gravity.
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Dipan Sengupta (University of Adelaide)12/12/2022, 11:45AIP: Theoretical and MathematicalTalk (preferred)
Compactified extra dimensions are well motivated BSM candidates. I will talk about the behaviour of scattering amplitudes of Kaluza-Klein gravitons in both flat and warped extra dimensions and assess the range of validity of the low-energy effective Kaluza-Klein theory.
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Emil Johansen12/12/2022, 12:00AIP: Theoretical and MathematicalTalk (preferred)
By adopting a Maxwell-Einstein picture of a (2+1)-dimensional superfluid it is predicted that vortex quasi-particles (kelvons) posses an intrinsic spin. We examine the possibility of implementing topological non-abelian geometric phases on such kelvon spins.
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Marwan Haddara (Centre for Quantum Dynamics, Griffith University, Gold Coast, Queensland 4222, Australia)12/12/2022, 12:15AIP: Theoretical and MathematicalTalk (preferred)
We demonstrate a logical no-go theorem on a version of the Wigner's friend thought experiment which strengthens previous device-independent no-go results and opens new questions on the interface of quantum foundations and modal logic.
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Archil Kobakhidze14/12/2022, 11:00AIP: Theoretical and MathematicalInvited talk
In this talk, I will describe how the non-trivial topology of curved spacetime induces quantum tunnelling between vacuum states that profoundly affect the properties and interactions of elementary particles. Namely, I will argue that gravitational instantons cause combined parity violation.
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Joshua Foo14/12/2022, 11:30AIP: Theoretical and MathematicalTalk (preferred)
We recently devised a weak-measurement model for calculating the relativistic Bohmian trajectories of photons. Here, I discuss an extension of this model to include relativistic two-photon interactions, and calculate the nonlocal Bohmian trajectories for photons in a position-symmetrised state.
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Tien Kieu (Centre for Quantum Technology Theory and Optical Sciences Centre, Swinburne University of Technology, Victoria, Australia)14/12/2022, 11:45AIP: Theoretical and MathematicalTalk (preferred)
We derive some Quantum Central Limit Theorems for expectation values of coarse-grained observables, as functions of hermitean operators of non-commuting variables. These open some pathway for an emergence of classical behaviours. We also obtain some nontrivial time-dependent differential entropies.
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Yury Stepanyants14/12/2022, 12:00AIP: Theoretical and MathematicalTalk (preferred)
The interaction of solitary waves in continuous media described by Kadomtsev-Petviashvili type equations is studied. The theoretical concept of particle-like soliton interactions in two-dimensional media is developed and illustrated by examples.
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Ayse Kizilersu (University of Adelaide)14/12/2022, 12:15AIP: Theoretical and MathematicalTalk (preferred)
We will be discussing the behaviour of the electronic order book in terms of its ingredients : arrival/cancellation time, waiting-time, inter-trade time. The London stock exchange data is used in this study and its analysis will be discussed.
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Bryan Dalton (Swinburne University of Technology)14/12/2022, 14:30AIP: Theoretical and MathematicalTalk (preferred)
Grassmann Phase Space Theory is applied to the BEC/BCS crossover in cold fermionic atomic gases to determinine the time/temperature evolution of Quantum Correlation Functions specifying the positions of fermionic atoms of opposite spin in single or two Cooper pairs.
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Cedric Simenel14/12/2022, 15:00AIP: Theoretical and MathematicalTalk (preferred)
A quantum ring model of same spin fermions is developed. Quantum Monte Carlo calculations are performed. Comparisons with analytical Hartree-Fock solutions are used to get an insight into the role of correlations.
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Murray Batchelor (Australian National University)14/12/2022, 15:15AIP: Theoretical and MathematicalTalk (preferred)
In this talk I will describe recent progress on two particular N-state generalizations of the widely studied quantum Ising model -- the N-state superintegrable chiral Potts model and the Z(N) free parafermion model.
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Fil Simovic (Macquarie University)14/12/2022, 16:00AIP: Theoretical and MathematicalTalk (preferred)
We study black hole thermodynamics in asymptotically de Sitter spacetimes, which is poorly understood owing to the presence of the cosmological horizon. We use a path integral approach to make equilibrium manifest, and study the resulting phase structure.
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Sebastian Murk (Macquarie University and Sydney Quantum Academy)14/12/2022, 16:15AIP: Theoretical and MathematicalTalk (preferred)
In spherical symmetry, only two classes of dynamic solutions to the semiclassical Einstein equations describe physical black holes, and their formation follows a unique scenario. To be compatible with their existence, modified gravity theories must satisfy several constraints.
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Evan Gale (University of Queensland)14/12/2022, 16:30AIP: Theoretical and MathematicalTalk (preferred)
We consider a relativistic UDW detector model with first-quantised centre of mass, which we compare to a full field-theoretic description. We analyse the transition rate to first-order in perturbation theory for different types of minimum uncertainty state.
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Dr Fatema Tanjia (Griffith University)14/12/2022, 16:45AIP: Theoretical and MathematicalTalk (preferred)
Here we show that Lorentz invariance emerges phenomenologically in the new Quantum Theory of Time in a natural way, i.e. due to the Galilean transformation of the background T violating field.
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Carolyn Wood (The University of Queensland)14/12/2022, 17:00AIP: Theoretical and MathematicalTalk (preferred)
We show that mass–energy equivalence must be included in models of a quantum particle interacting with an external environment in order to represent physically relevant scenarios such as atom-light interactions.
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Dominic Lewis (RMIT University)14/12/2022, 17:15AIP: Theoretical and MathematicalTalk (preferred)
We use bandlimitation to express quantum fields as simultaneously continuous and discrete, showing that discrete fields posess continuous translational symmetry and taking us a step towards unifying quantum field theory with general relativity.
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Jesper Levinsen (Monash University)AIP: Theoretical and MathematicalInvited talk
The Fermi polaron, a particle dressed by excitations of a fermionic medium, is a problem that arises in multiple contexts. I will discuss recent theory progress toward understanding the static and dynamic properties of such polarons in ultracold Fermi gases.
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